EP0353757A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Information transmission system with record/reproducing device
Assignee: Canon Inc
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Filing: 1989-08-03
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Granted: —
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Expires: 2009-08-03
Abstract
Abstract There is disclosed an information transmission system provided with: a record/reproducing unit for recording compressed information obtained by compressing digital information with highly efficient encoding, on a recording medium, and reproducing the information from the recording medium; a transmitting unit for transmitting the compressed information, reproduced by the record/ reproducing unit, to a transmission channel; and a receiving unit for receiving the compressed information from the transmission channel and expanding the amount of the received compressed information to reproduce the original digital information.
Inventors
- 👤 Shingo Ikeda
- 👤 Motokazu Kashida
- 👤 Toshihiro Yagisawa
- 👤 Masahide Hasegawa
- 👤 Mitsugu Canon Musashishinden-Ryo Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 15:33
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/20; H04N21/23; H04N21/236; G; G11; G11B; G11B20/00; G11B20/00007; G11B20/10; G11B20/18; G11B20/1806; G11B20/1813; G11B20/1833; G11B20/1876; H04N19/00; H04N19/40; H04N21/231; H04N21/238; H04N21/2383; H04N21/25; H04N21/266; H04N21/2662; H04N21/40; H04N21/43; H04N21/433; H04N21/4334; H04N21/434; H04N21/438; H04N21/4382; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; H04N5/9261; H04N5/93; H04N5/94; H04N5/945; H04N7/00; H04N7/24; H04N7/52; H04N7/54; H04N5/9265; H04N5/9267
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
72 words
An information transmitting system, comprising: a) information compression means for compressing digital information to generate compressed information; b) record/reproducing means for recording said compressed information on a recording medium, and reproducing therefrom said compressed information; c) transmission means for transmitting said compressed information reproduced by said record/reproducing means to a transmission channel; and d) information expansion means for expanding said compressed information transmitted through said transmission channel, thereby reproducing said digital information.
Claim 2
Dependent Claim
72 words
An information transmitting system, comprising: a) information compression means for compressing digital information to generate compressed information; b) record/reproducing means for recording said compressed information on a recording medium, and reproducing therefrom said compressed information; c) transmission means for transmitting said compressed information reproduced by said record/reproducing means to a transmission channel; and d) information expansion means for expanding said compressed information transmitted through said transmission channel, thereby reproducing said digital information.
Claim 3
Dependent Claim
48 words
A system according to claim 1, wherein said information compression means comprises a high efficiency encoding circuit for encoding said digital information utilizing the correlation thereof, and said information expansion means comprises a decoding circuit for executing a process corresponding to that of said high efficiency encoding circuit.
Claim 4
Dependent Claim
13 words
A system according to claim 1, wherein said digital information comprises video signal.
Claim 5
Dependent Claim
34 words
A system according to claim 1, wherein said transmission means comprises switch means for selectively sending said compressed information reproduced by said record/reproducing means or said compressed information released from said information compression means.
Claim 6
Dependent Claim
50 words
A system according to claim 1, wherein said record/reproducing means comprises plural record/reproducing apparatus each for recording said compressed information on the recording medium and reproducing said compressed information from said recording medium, and said system comprises switch means for selectively supplying said plural record/reproducing apparatus with said compressed information.
Claim 7
Dependent Claim
29 words
A system according to claim 5, wherein said transmission means comprises switch means for selectively supplying said transmission channel with said compressed information reproduced from said plural record/reproducing apparatus.
Claim 8
Dependent Claim
22 words
A system according to claim 1, wherein said transmission means is adapted to transmit said compressed information selectively to plural transmission channels.
Claim 9
Dependent Claim
62 words
A system according to claim 1, wherein said record/reproducing means comprises a first error correction code adding circuit for adding an error correction code to the compressed information to be recorded, and a first error correction circuit for correcting the error in codes in the reproduced compressed information utilizing the error correction code added in said first error correction code adding circuit.
Claim 10
Dependent Claim
71 words
A system according to claim 8, wherein said transmitting means comprises a second error correction code adding circuit for adding an error correction code to the compressed information to be transmitted, and said information expansion means comprises a second error correction circuit for correcting error in the codes of the compressed information transmitted by said transmission channel, utilizing the error correction code added by said second error correction code adding circuit.
Claim 11
Dependent Claim
50 words
A system according to claim 9, wherein said first error correction circuit is adapted to generate a first flag information in response to the generation of an uncorrectable code, and said transmitting means is adapted to transmit said first flag information together with said compressed information to said transmission channel.
Claim 12
Dependent Claim
58 words
A system according to claim 10, wherein said second error correction circuit is adapted to generate a second flag information in response to the generation of an uncorrectable code, and said information expansion means further comprises an interpolation circuit for effecting interpolation of said digital information in response to said first flag information and said second flag information.
Claim 13
Dependent Claim
38 words
A system according to claim 9, wherein said record/reproducing means comprises a first interpolation circuit for effecting interpolation of said reproduced compressed information, according to whether the correction by said first error correction circuit is possible or not.
Claim 14
Dependent Claim
39 words
A system according to claim 12, wherein said information expansion means comprises a second interpolation circuit for effecting interpolation of said reproduced digital information, according to whether the correction by said second error correction circuit is possible or not.
Claim 15
Dependent Claim
43 words
A system according to claim 12, wherein said information expansion means comprises a second interpolation circuit for effecting interpolation of the compressed information transmitted through said transmission channel, according to whether the correction by said second error correction circuit is possible or not.
Claim 16
Dependent Claim
74 words
An information transmitting system, comprising: (A) a record/reproducing apparatus comprising: a) information compression means for compressing digital information to generate compressed information; b) recording means for recording said compressed information on a recording medium; and c) reproducing means for reproducing said compressed information from said recording medium; and (B) a transmitting apparatus comprising: transmission means for transmitting said compressed information, reproduced by said reproducing means, to said transmission channel without restoring said digital information.
Claim 17
Dependent Claim
74 words
An information transmitting system, comprising: (A) a record/reproducing apparatus comprising: a) information compression means for compressing digital information to generate compressed information; b) recording means for recording said compressed information on a recording medium; and c) reproducing means for reproducing said compressed information from said recording medium; and (B) a transmitting apparatus comprising: transmission means for transmitting said compressed information, reproduced by said reproducing means, to said transmission channel without restoring said digital information.
Claim 18
Dependent Claim
30 words
A system according to claim 15, further comprising: a receiving apparatus comprising information expansion means for expanding said compressed information transmitted through said transmission channel thereby restoring said digital information.
Claim 19
Dependent Claim
75 words
An information transmitting system, comprising: (A) a transmit/receiving apparatus comprising: a) information compression means for compressing digital information to generate compressed information; b) transmission means for transmitting said compressed information to a transmission channel; and c) reception means for receiving said compressed information transmitted through said transmission channel; and (B) a recording apparatus comprising: recording means for recording said compressed information, received by said reception means, on a recording medium with restoring said digital information.
Claim 20
Dependent Claim
75 words
An information transmitting system, comprising: (A) a transmit/receiving apparatus comprising: a) information compression means for compressing digital information to generate compressed information; b) transmission means for transmitting said compressed information to a transmission channel; and c) reception means for receiving said compressed information transmitted through said transmission channel; and (B) a recording apparatus comprising: recording means for recording said compressed information, received by said reception means, on a recording medium with restoring said digital information.
Claim 21
Dependent Claim
41 words
A system according to claim 17, further comprising: a reproducing comprising reproduction means for reproducing said compressed information from said recording medium; and information expansion means for expanding said compressed information, reproduced by said reproduction means, to restore said digital information.
Claim 22
Dependent Claim
158 words
An information transmitting system, comprising: a) information compression means for compressing digital information to generate compressed information; b) first error correction code adding means for adding a first error correction code to said compressed information; c) record/reproducing means for recording the compressed information with added first error correction code on a recording medium, and reproducing said compressed information from said recording medium; d) first error correction means for correcting error in the code of the compressed information, reproduced by said record/reproducing means, utilizing said first error correction code; e) first interpolation means for effecting interpolation of said reproduced compressed information, according to whether the correction by said first error correction circuit is possible or not; f) second error correction code adding means for adding a second error correction code to the compressed information transmitted through said first interpolation means; and g) transmission means for transmitting the compressed information with added second error correction code, to a transmission channel.
Claim 23
Dependent Claim
158 words
An information transmitting system, comprising: a) information compression means for compressing digital information to generate compressed information; b) first error correction code adding means for adding a first error correction code to said compressed information; c) record/reproducing means for recording the compressed information with added first error correction code on a recording medium, and reproducing said compressed information from said recording medium; d) first error correction means for correcting error in the code of the compressed information, reproduced by said record/reproducing means, utilizing said first error correction code; e) first interpolation means for effecting interpolation of said reproduced compressed information, according to whether the correction by said first error correction circuit is possible or not; f) second error correction code adding means for adding a second error correction code to the compressed information transmitted through said first interpolation means; and g) transmission means for transmitting the compressed information with added second error correction code, to a transmission channel.
Claim 24
Dependent Claim
33 words
A system according to claim 19, further comprising: second error correction means for correcting error in the code of said compressed information transmitted through said transmission channel, utilizing said second error correction code.
Claim 25
Dependent Claim
58 words
A system according to claim 20, further comprising: information expansion means for expanding said compressed information transmitted through said transmission channel thereby restoring said digital information; and second interpolation means for effecting interpolation of said digital information restored by said information expansion means, according to whether the correction by said second error correction circuit is possible or not.
Claim 26
Dependent Claim
58 words
A system according to claim 20, further comprising: second interpolation means for effecting interpolation of said compressed information transmitted through said transmission channel, according to whether the correction by said second error correction means is possible or not; and information expansion means for expanding said compressed information transmitted through said second interpolation means thereby restoring said digital information.
Claim 27
Dependent Claim
147 words
An information transmitting system, comprising: a) first error correction code adding means for adding a first error correction code to digital information; b) record/reproducing means for recording digital information with said added first error correction code on a recording medium, and reproducing said digital information from said recording medium; c) first error correction means for correcting error in the code of the digital information reproduced by said record/reproducing means utilizing said first error correction code, and adapted for generating first flag information in response to the generation of an uncorrectable code; d) second error correction code adding means for adding a second error correction code to the digital information subjected to the correction of code error in said first error correction means; and e) transmission means for transmitting the digital information with said added second error correction code, and said first flag information to a transmission channel.
Claim 28
Dependent Claim
147 words
An information transmitting system, comprising: a) first error correction code adding means for adding a first error correction code to digital information; b) record/reproducing means for recording digital information with said added first error correction code on a recording medium, and reproducing said digital information from said recording medium; c) first error correction means for correcting error in the code of the digital information reproduced by said record/reproducing means utilizing said first error correction code, and adapted for generating first flag information in response to the generation of an uncorrectable code; d) second error correction code adding means for adding a second error correction code to the digital information subjected to the correction of code error in said first error correction means; and e) transmission means for transmitting the digital information with said added second error correction code, and said first flag information to a transmission channel.
Claim 29
Dependent Claim
91 words
A system according to claim 23, further comprising: second error correction means for correcting error in the code of the digital information transmitted through said transmission channel, utilizing said second error correction code, and adapted for generating second flag information in response to the generation of an uncorrectable code; and interpolation means for effecting interpolation of the digital information subjected to the correction of code error in said first error correction means, according to said second flag information and also according to the first flag information transmitted through said transmission channel.
Claim 30
Dependent Claim
98 words
An information transmitting system, comprising: a) error correction code adding means for adding an error correction code to digital information; b) record/reproducing means for recording said digital information with said added first error correction code on a recording medium and reproducing said digital information from said recording medium; c) transmission means for transmitting the digital information reproduced by said record/reproducing means to a transmission channel; and d) error correction means for correcting error in the code of the digital information transmitted through said transmission channel, utilizing the error correction code added by said error correction code adding means.
Claim 31
Dependent Claim
98 words
An information transmitting system, comprising: a) error correction code adding means for adding an error correction code to digital information; b) record/reproducing means for recording said digital information with said added first error correction code on a recording medium and reproducing said digital information from said recording medium; c) transmission means for transmitting the digital information reproduced by said record/reproducing means to a transmission channel; and d) error correction means for correcting error in the code of the digital information transmitted through said transmission channel, utilizing the error correction code added by said error correction code adding means.
Claim 32
Dependent Claim
164 words
An information transmitting system, comprising: a) first error correction code adding means for adding a first error correction code to video information; b) second error correction code adding means for adding a second error correction code to audio information; c) record/reproducing means for recording, on a recording medium, the video information with said added first error correction code and the audio information with said added second error correction code, and reproducing said video information and said audio information from said recording medium; d) first error correction means for correcting error in the code of the video information reproduced by said record/reproducing means, utilizing said first error correction code; e) third error correction code adding means for adding a third error correction code to the video information transmitted through said first error correction means; and f) transmission means for transmitting, to a transmission channel, the audio information with said added second error correction code and the video information with said added third error correction code.
Claim 33
Dependent Claim
164 words
An information transmitting system, comprising: a) first error correction code adding means for adding a first error correction code to video information; b) second error correction code adding means for adding a second error correction code to audio information; c) record/reproducing means for recording, on a recording medium, the video information with said added first error correction code and the audio information with said added second error correction code, and reproducing said video information and said audio information from said recording medium; d) first error correction means for correcting error in the code of the video information reproduced by said record/reproducing means, utilizing said first error correction code; e) third error correction code adding means for adding a third error correction code to the video information transmitted through said first error correction means; and f) transmission means for transmitting, to a transmission channel, the audio information with said added second error correction code and the video information with said added third error correction code.
Claim 34
Dependent Claim
59 words
A system according to claim 26, further comprising: second error correction means for correcting error in the code of the audio information transmitted through said transmission channel, utilizing said second error correction code; and third error correction means for correcting error in the code of the video information transmitted through said transmission channel, utilizing said third error correction code.
Claim 35
Dependent Claim
50 words
A system according to claim 26, further comprising: compression means for compressing video information to be supplied to said first error correction code adding means; and expansion means for expanding the video information transmitted by said third error correcting means, by a process corresponding to that of said compression means.
References Cited (Backward Citations)
No citation records indexed.
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